Device for applying metallic leaf



L. M. HARWOOD.

EVICE FOR APPLYING METALLIC LEAF.

APPLLCAIION HLFD NOV. 29, 1920.

1,3?3,424. Patented Apr. 5, 1921.

ATTOR N EYE.

L. M HARWOOD.

DEVICE FOR APPLYING METALLIC LEAF. APPLICAHON FILED NOV. 29,.1920.

. INVENTOR BY A w ATTORNEYS.-

Patented. Aprq5, 1921.

:rrso stares LEON M. rmnwoon, or SPRINGFIELD, MASSACHUSETTS.

DEVICE FOR APPLYING METALLIC LEAF.

Specification of Letters Patent.

PatentedApr. 5, 1921.

Application filed November 29,1920. Serial No. 427,078. g

To allwhomt't may concern:

Be it known that I, LEON M. HARWooD,

a citizen of the United States, residing at- Springfield, in the countyof Hampden and State of Massachusetts, have invented new and usefulImprovements in Devices for Applying Metallic Leaf, of whichthefollowing is a specification. f

This invention relates to; improvements in devices for applying metallicleaf.

An object of the invention is to provide a conveniently operable devicefor drawing the metallic leaf, and its supporting strip, from the woundpackage roll in such a manner that the roll may be unwound withoutliability of the leaf adhering to the outside of the supporting stripand thereby following around the roll instead of unwinding as desired. 7a v Another object of the invention is to provide a roll for the purposeof receiving and depositing the metallic leaf, which roll has a portiononly of its peripheral surface of material capable of'being electrified,whereby the leaf may be attracted near its lead ing end to the roll andheld until it 'is deposited thereby.

A further object of the invention is to provide a movable carriage,having a re ceivlng and depositing roll and supportlng means for apackage roll of metalho leaf,

together with directing means to guide the supporting strip away fromtheleaf as it is deposited upon thework and toguide such strip in such amanner that a pull thereon, after it leaves the directing means, willunwind the leaf from the'roll and advancethe carriage along the work.

Other objects and advantages will appear in the following descriptionand in the illustrative embodiment of the invention in the accompanyingdrawings, in which,-

Figure 1 is a plan view of a device embodying the invention;

Fig. 2 is a side elevational view thereof; and Y Figs. 3 and 1 are planviews oftwo forms of receiving and depositing rolls for use in thedevice.

Referring to these drawings: the device in its broadest aspects involvessuitable sup porting means for a packageroll of metallic leaf and a bedadjacent thereto, which is so constructed as to be capable of attractingthe leaf as it, together with its supporting strip, is unwound from thepackage roll and thereby preventing adherence of the leaf to the outerside of the supporting strip.

. As shown, the supportingmeans consists of an arbor 5 upon which thepackage roll 1, (consisting of a supporting strip with leaf, previouslydeposited thereon, wound upon a hollow core into roll form) is slipped.Arbor 5 is suitably mounted at its ends in slots 6 in spaced frames 'Zand in such a manner as to be conveniently removable, being heldinfslots 6 by retainers 8,

which may readily be loosened and swung upwardly to release the arbor. I

Also mounted in frames 7 are rods 9 and 10, arranged one on each side ofarbor 5 and in parallelism therewith. These rods support between them.one or more bands 11, which constitute the electrifying bed abovereferred. to. The bands 11 may be and preferably areof rubbenwhichisflexible, elastic and capable of being electrified, although othersuitable material may i be provided if desired. Adjustablymounb ed ineach frame as by thescrewthreads shown, is a I downwardly extendingmember 12 and extending between the two members 12 and bearing againstthe bands 11 isa cross-bar 13;; By turning the members 12, cross-bar 13may be moved upand down to bring the bands 11 toward oraway' fromfthepackage roll ron arbor 5, thus providing for adjustment of the bed according to the size of the package roll or for other purposesas desired-In connectionwith the device described, there is preferably employed areceiving roll; or more properly a receiving and depositing roll. Such aroll is shown at 14 and is journaled at its ends in the forward part offrames 7. The supporting strips with metallic leaf Z is led from thepackage roll r to roll 1 1 over the intervening bed 11 and, in drawingthe strip over the bed,

frictionally electricity is generated to attract the leafZ and preventit from following around roll r by adherence to the'outer side of strip8. Theroll leis moved over the work, as w, and deposits the leafthereon.

To assist in the operation described,-the

frames. 7 "preferably constitute part of a movable carriagev whichincludes rearwardly extending-bars 15 secured to frames .7 and suitablemeans, such as wheels 16 upon rod 10, to support thecarriage formovement,

constructed as desirech as with a peripheral covering of suitablematerial. such as rub- .ber or the like, which is capable of beingfrictionally electrified. The roll may be entirely covered with rubber,or the like, or only partially so, as by one or more rela tively narrowperipheral bands 19 (Fig 4), or by one or more relatively narrowlongitudinal bands 20 (Fig. 3). The amount of peripheral surface of roll14, having electrifiable material, may therefore be varied as desiredaccording to the degree of attraction which is necessary or desired tohold the leaf to the roll. Preferably also, a brush 21, having asurface,'such as of wool. or the like, to engage roll 14, is provided toincrease the electric attraction for the leaf by frictioning therubberas roll 14 turns.

A desirable arrangement is shown in Fig. 3, forthe single longitudinalstrip 20 may bearranged to attract merely apart of the leaf, as near itsleading-end, and, being held in such a manner, the leaf will-followaround the. roll 14 and be deposited, correctly positioned, upon'thework. A knob or handle 22 may be removably secured to roll 14, asindicated in Fig. 1, so that, after strip 8 has been drawn outsufficiently to bring the leading end of the leaf Z over roll 14, thelatter may be manually turned (while lifted out of contact withwork w)to bring theelectrified part 20 into position to attract the leading endof the lea Inoperation, the package roll ,1" having been placed on arbor5, the strips is drawn out and around roll 14 and is threaded betweenrolls 17 and 18. The carriage, being suitably supported, in the mannerillustrated orotherwise, the receiving roll 14 is positioned as desiredupon work 10. The strip 8 is then'pulled which results in movingthe'carriage along the work and the unwinding of roll 1'. As the strip 8passes over the electrifiable bed 11,ithe leaf is attracted thereby andprevented from following around roll 7 thus insuring that the leaftravels forwardly properly held to strip 8. As the roll 1" diminishes indiameter, the bed 11 is adj ustedfrom time to time by the mem bers 12 tocompensate-for the change in size. Adjustment of members. 12 may also bemadeto control the degreeof proximity of bed'll to the package roll andthe degree of contact of bed 11 with strip 8. Whenever desired, the roll14 may be lifted from work 10 and strip a pulled out without moving thecarriage to bring leaf sections into proper relation with roll r, to belater deposited in the desired position on the work w.

Many changes in detail and variations in structure may be made in theone exemplary form. of the device heretofore described without departingfrom the scope of the invention and I do not desireto limit myself tovarious elements .of the structure disclosed except as such elementsappear-in the following claims.

. lVhat Ilclaim is i 1. In combination,supporting means for apackageroll of metallic leaf, and a bed over which the leaf with itssupporting strip may bedrawn as it is unwound from the roll andelectrified to prevent its adhesion to the outer side of the supportingstrip.

, 2. Ina device for applying metallic leaf, supporting means for apackage roll of metallic leaf, a receiving roll, and an intervening bed.ofsuitable material capable of attracting the leaf by frictionalelectricity, whereby when the leaf is unwound. from the package roll itis prevented from adl ering to the outer side of the supporting strip. iI

3. In a device for applying metallic leaf, supporting means for apackage roll of metallic leaf, a receiving roll, an intervening bed ofsuitable material capable of attracting the leafby frictionalelectricity, whereby when the leaf is unwoundfrom the pack age roll itis prevented from adhering to the outer. side of the supporting strip,and means for moving said bed and; supporting means. the one relativelyto the other.

4. In a device for applying metallic leaf, a receiving roll for the leafhaving a surface partially capable'of being electrified to hold the leafby electric attraction in position on the roll.

5. In a device for applying metallic leaf, a movable carriage,supporting means for a package roll of metallic leaf mounted in saidcarriage, a receiving roll in the latter over which theleaf with itssupporting strip is drawn and by which :the leaf is deposited uponthework,and guiding means to lead the supporting strip from the receivingroll away from the deposited leaf and to direct the leading end of thestrip so that apull thereon will unwind the leaf and strip from thepackage roll and will advance'the carriage along the work. i

6. In a device for applying metallic leaf, amovable carriage, supportingmeans for a package roll of metallic leaf mounted in said carriage, areceiving roll in the latterover which the leaf with its supportingstripis drawn and byfwhich the leaf is deposited upon the work, abeddoetween said supporting means and receiving roll to 'eleetrify theleaf as it passes thereover to prevent the leaf adhering to the outerside of the supporting strip, and guiding means to lead the supportingstrip from the receiving roll away from the deposited leaf and to directthe leading end of the strip so that a pull thereon will unwind the leafand strip from the 7 package roll and will advance the carriage alongthe Work.

In testimony whereof I have affixed my signature.

LEON M. HARWOOD.

